Results 11 to 20 of about 3,335,604 (350)

The psychophysics of absolute threshold and signal duration: A probabilistic approach [PDF]

open access: yesJournal of the Acoustical Society of America, 2011
The absolute threshold for a tone depends on its duration; longer tones have lower thresholds. This effect has traditionally been explained in terms of ?temporal integration? involving the summation of energy or perceptual information over time.
Heil P.   +5 more
core   +2 more sources

Analyzing soccer match sprint distances: A comparison of GPS-based absolute and relative thresholds

open access: yesBiology of Sport
This study compared the most common absolute sprint threshold (> 25.2 km/h) with relative and individualized thresholds (> 70%, > 75%, > 80%, > 85% and > 90% of peak match speed).
Hugo Silva   +4 more
doaj   +2 more sources

The dual rod system of amphibians supports colour discrimination at the absolute visual threshold [PDF]

open access: hybridPhilosophical Transactions of the Royal Society B: Biological Sciences, 2017
The presence of two spectrally different kinds of rod photoreceptors in amphibians has been hypothesized to enable purely rod-based colour vision at very low light levels.
Carola A. M. Yovanovich   +5 more
openalex   +2 more sources

Dark adaptation, absolute threshold and purkinje shift in single units of the cat's retina [PDF]

open access: bronzeJournal of Physiology, 1957
H. B. Barlow   +2 more
openalex   +2 more sources

Defining the Optimal Method for Measuring Metabolic Tumor Volume on Preoperative 18F-Fluorodeoxyglucose-Positron Emission Tomography/Computed Tomography as a Prognostic Predictor in Patients With Pancreatic Ductal Adenocarcinoma

open access: yesFrontiers in Oncology, 2021
ObjectivesMetabolic tumor volume (MTV) on 18F-fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) is a promising prognostic predictor in pancreatic ductal adenocarcinoma (PDAC).
Yasuko Tatewaki   +15 more
doaj   +1 more source

Establishment of Normative data for Monaural Recordings of Auditory Brainstem Response and its Application in Screening Patients with Hearing Loss: A Cohort Study [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2013
Objectives: To establish normative data required for recording Auditory Brainstem Response (ABR) using monaural stimulations in children with normal hearing. Methods: This study was conducted on 40 apparently healthy children.
Shivaji Chalak   +3 more
doaj   +1 more source

A novel approach for human whole transcriptome analysis based on absolute gene expression of microarray data [PDF]

open access: yesPeerJ, 2017
Background In spite of the emergence of RNA sequencing (RNA-seq), microarrays remain in widespread use for gene expression analysis in the clinic. There are over 767,000 RNA microarrays from human samples in public repositories, which are an invaluable ...
Shirley Bikel   +10 more
doaj   +2 more sources

Magnitude of the contralateral efferent olivocochlear effect as a function of the frequency

open access: yesJournal of Otology, 2022
Background: The activation of the medial olivocochlear reflex reduces the cochlear gain, which is manifested perceptually as decreased auditory sensitivity.
Fernanda Anza Miranda   +1 more
doaj   +1 more source

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